I bought this for my caddy Asus n56vb, it turns out that I will have to buy another. The caddy functions, ie they can put in the location of the optical drive and well put a disc in but here: - It is not possible to screw on the chassis of the computer: the part which is recovered from the optical drive and can be screwed to the back of the caddy is positioned too high relative to the connector. So it is not possible to insert the caddy if you want to screw it. - The holes on the front side for placing the cover of the optical drive is not the right place. Result: not possible to replace the cover on top.
It is not possible for me to use it as is, the disk may fall to less transportation, and in the case of a hard drive, I will not take the risk. So I advise you to take qqchose a bit more expensive, but has been better thought out.